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[1] [2] It was originally developed for the computer program Phred to help in the automation of DNA sequencing in the Human Genome Project. Phred quality scores are assigned to each nucleotide base call in automated sequencer traces. [1] [2] The FASTQ format encodes phred scores as ASCII characters alongside the read sequences. Phred quality ...
Plot of log10(mass) versus log10(radius) of the 34 largest objects in the solar system, including the fitted regression line and a plot of residuals. The following objects have a nominal mean radius of 400 km or greater.
The botulinum toxin as the most toxic substance known has an LD 50 value of 1 ng/kg, while the most non-toxic substance water has an LD 50 value of more than 90 g/kg; a difference of about 1 in 100 billion, or 11 orders of magnitude. As with all measured values that differ by many orders of magnitude, a logarithmic view is advisable.
[1] Electrical-discharge-machine. Design for manufacturability (also sometimes known as design for manufacturing or DFM) is the general engineering art of designing products in such a way that they are easy to manufacture. The concept exists in almost all engineering disciplines, but the implementation differs widely depending on the ...
Gliese 710, or HIP 89825, is an orange 0.6 M ☉ star in the constellation Serpens Cauda. It is projected to pass near the Sun in about 1.29 million years at a predicted minimum distance of 0.051 parsecs—0.1663 light-years (10,520 astronomical units) [5] (about 1.6 trillion km)—about 1/25th of the current distance to Proxima Centauri. [10]
[1] [2] [3] When evaluated on the actual data points, it becomes a function solely of the model parameters. In maximum likelihood estimation , the argument that maximizes the likelihood function serves as a point estimate for the unknown parameter, while the Fisher information (often approximated by the likelihood's Hessian matrix at the ...
J1808−5104 is an ultra metal-poor (UMP) star, one that has a logarithmic metallicity [Fe/H] less than −4, or 1 / 10,000 th of the levels in the Sun. [8] It is a single-lined spectroscopic binary, with radial velocity variations in its spectral absorption lines interpreted as orbital motion of the visible star. The companion is ...
As early as 1960, the star was suspected of experiencing perturbations and a period of about 1,500 days (4.1 years) was suggested. [11] It was subsequently examined by Sarah Lee Lippincott , who, in 1979, determined that the perturbing companion star had a mass of between 0.13 and 0.20 M ☉ , and that it orbited the primary in a moderately ...